Or is it just additional features of the platform without altering the review data?
Yelp themselves have addressed this with a dedicated page: https://www.yelp.com/extortion
Maybe I’ve been duped. I’d be curious if your comment is based on different research, or personal experience.
They do not "manipulate" ratings, sure... They just take a looong time to "Review" positive reviews, and not too long to "Review" negative reviews you get. And, of course, only reviews they have "reviewed can be shown and count towards your average score...
I'm confused about how you think this would work.
1. Yelp doesn't report on its approval speed.
2. To get an accurate report on this, you would have to have several accounts posting positive and negative reviews on the same pages. Yelp doesn't allow this and would ban the accounts.
3. Yelp explicitly disallows scraping their site (i.e. having a bot archive the pages). Doing so would be thwarted by their anti-bot measures. It's also against their TOS.[0]
Do you have web archives that can be used to build these stats?
[0]: https://www.yelp-support.com/article/Can-I-copy-or-scrape-da...
1. You don’t need that to demonstrate statistically significant difference between paying and non-paying customers
2. You don’t need to make any accounts, only read existing and incoming data
3. Yes, you shouldn’t break TOS but you also shouldn’t be throwing around unsubstantiated accusations of extortion
I have no need to convince you or anyone else. But I am convinced. I trust my eyes a lot more than I trust yelp.
Right now you don’t even have proper N=1.